Crazy Tube Circuits Unobtanium
Effect Pedal for Electric Guitar

Latest User Reviews
Perfect Dumble and Klon
This pedal changed my clean tone from anemic to crystal clear on the dumble side, and, a perfect Klon on the other, with a true/buffered bypass choice on the Klon side. Just great, best two pedals in one I have ever bought.
Best Dumble or Klon pedal I've ever tried
I've bought several cheapy Klon & Dumble types, and also the Wampler Tumnus & Euphoria. This is a level above on all counts. Wonderful, rich sound. Pricy, but you get 3 great sounds that are as close as you could hope for, all for <€300 instead of needing a mortgage for the originals. I using a Revv D20, so that helps...
Great sounding pedal
D-style and klon circuit in one pedal.
Both sounds really good on their own, or stacked together. If used with a loop switcher each side can be setup in their own loop and be used as 2 separate pedals. Dumble side has two modes controllable via a separate footswitch, and the ODS mode can be boosted about 6db by an internal trim pot. Feature rich and versatile pedal.
Amazing Tones!
Wow! What a 1-2 punch!!! Soooo creamy and really nice tones.
I will never ever play a Dumble or A Klone but this is the closest you can get! Fast shipping too!
Technical Data
- Manufactured by Crazy Tube Circuits
- Released in 2022
- Average price : $316
- Overdrive / Pre-Amp
- Legendary pedal overdrive and amp overdrive combined in one unit
- Pedal and amp section can be used together in series or separately
- Smooth sustain when using both sides simultaneously
- Passive serial effects loop for looping in other pedals between pedal and amp section
- Works internally with 18V DC for more headroom and tube-like behaviour
- True bypass design with high-quality relays
- Controls right side: Gain, Volume, Treble
- Controls left side: Gain, Volume, Tone, Emphasis
- Switch right side: Buffer, True + Stock, Mod
- Switch left side: SSS, ODS
- LED: Effect On
- Footswitch: Effect Bypass
- Power consumption: 83 mA
- Dimensions : 147mm x 103mm x 65mm
- Weight : 510g
- Manufactured in Greece
- K-style overdrive circuit with germanium diodes
- Controls: Volume, Gain, Treble, Buffer/True switch, Stock/Mod switch - original clipping ("Stock") or extended headroom ("Mod")
- Buffered bypass or true bypass selectable
- D-style amp-in-a-box overdrive
- Controls: Volume, Gain, Tone, Emphasis, ODF/SSS switch
- Emphasis controls presence and response in the low range
- 2 Independent overdrive circuits: SSS and ODS
- SSS: Clean and transparent with natural compression
- ODS: More gain and emphasis on mid frequencies and harmonic overtones
- Internal trim pots for adjusting EQ and volume boost of the SSS & ODS circuitry
- Input: 6.3 mm jack
- FX Loop Send & Return: 2x 6.3 mm jack
- Output: 6.3 mm jack
- Connection for external footswitch for switching the amp overdrive circuitry
- Mains adapter connection: Hollow female plug 5.5 x 2.1 mm - negative pole inside
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